Fatigue damage growth mechanisms in continuous fiber reinforced titanium matrix composites

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6739193

Johnson, W S; Naik, R A; Pollock, W D

The role of fiber/matrix interface strength, residual thermal stresses, and fiber and matrix properties on fatigue damage accumulation in continuous fiber metal matrix composites (MMC) is discussed. Results from titanium matrix silicon carbide fiber composites is the primary topic of discussion. Results were obtained from both notched and unnotched specimens at room and elevated temperatures. The stress in the 0 deg fibers was identified as the controlling factor in fatigue life. Fatigue of the notched specimens indicated that cracks can grow in the matrix materials without breaking fibers.

• Research Organization: National Aeronautics and Space Administration, Hampton, VA (USA). Langley Research Center
• OSTI ID: 6739193
• Report Number(s): N-90-21409; NASA-TM--102594; NAS--1.15:102594; CONF-900764--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
CARBIDES
CARBON COMPOUNDS
COMPOSITE MATERIALS
ELEMENTS
FATIGUE
FIBERS
HIGH TEMPERATURE
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
METALS
SILICON CARBIDES
SILICON COMPOUNDS
STRESSES
TENSILE PROPERTIES
THERMAL DEGRADATION
THERMAL STRESSES
TITANIUM
TRANSITION ELEMENTS